JPH0138457Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for regulating the outlet temperature of a gas instantaneous water heater.

As a conventional device of this kind, for example,
As seen in No. 25214, the water heater body includes a heat exchanger and a gas burner for heating the heat exchanger, and a water flow passage connected to the heat exchanger includes a water flow regulating member and a water flow passage connected to the gas burner. A type in which a gas amount adjusting member is interposed in the gas passage is known, but in this case, both adjusting members are constantly interlocked with each other so that when the amount of water increases, the amount of gas decreases, and when the amount of water decreases, the amount of gas decreases. As the amount of gas is increased, the tapping temperature is always adjusted by both the amount of water and the amount of gas, which is not necessarily desirable. That is, since the adjustment is made by both the amount of water and the amount of gas, it is relatively rapid, and the operation to achieve a predetermined appropriate temperature is relatively troublesome.

The purpose of the present invention is to obtain a device free of such inconveniences, and as illustrated in FIGS. 1 to 3, a heat exchanger 2 is installed in a water heater body 1,
It is equipped with a gas burner 3 for heating this, and
A water flow adjustment member 5 is provided in the water passage 4 leading to the heat exchanger 2.
In this type, a gas amount adjusting member 7 is interposed in a gas passage 6 leading to the gas burner 3, and an interlocking mechanism 9 for operating the gas amount adjusting member 7 to reduce the amount is interposed.

In the illustrated example, both members 5 and 7 are connected to respective shafts 5a and 7.
The rack 13 is of a rotary valve type that is rotated at a point a, and the interlocking mechanism 9 is supported by two horizontal shafts 11 and 12 fixed to a frame 10 and is movable in the horizontal direction.
, a pinion 15 meshed with the rack 13 and fixed on the shaft 5a, and a mounting bracket 1 attached to the rack 13.
6, and an adjusting plate 19 having a notch 18 that is fixed on the shaft 7a and that engages with the pin 17 when the pin 17 moves to a predetermined position.
and a spring 20 that normally springs the shaft 7a to a position corresponding to the maximum gas amount, and the adjustment plate 19 is configured with a spring 20 that springs the shaft 7a to a position corresponding to the maximum gas amount. Consisting of a knob that is fitted and moved horizontally on the operation panel surface (not shown) of the water heater,
When the knob is moved in the horizontal direction and the shaft 5a is largely rotated to the side where the amount of water increases, the rack 13 is disengaged from the pinion 15, the linkage between the knob and the water amount adjusting member 5 is released, and the amount of water is increased. The amount of water remains constant, or the opening area on the outflow side of the water amount adjusting member 5 remains constant thereafter, with the knob and the water amount adjusting member 5 interlocking without the rack 13 coming off the pinion 15, and the water amount is constant. At the same time, the pin 17 and the notch 18 engage with each other as shown in FIGS. 4 and 5, and the knob and the gas amount adjusting member 7 are interlocked, so that the gas amount can be varied. I made it so.

To explain the operation using a specific example, in the case of a No. 4 water heater, the water amount adjusting member 5 is
If you operate it, the amount of water will vary from 2 to 5, for example.
However, in this case, the interlocking mechanism 9 is operated only at point 5, and thus the gas amount is greatly reduced only at point 5 of the water amount, as shown by line a in FIG. In other words, the gas burner 3 has a water volume of less than 5, for example.
It has a full input of 8000Kcal/H, and at water volume 5, its ability is adjusted from 8000Kcal/H to 4000Kcal/H, which is the stroke limit of the operator 8. In this way, when considering the increase in temperature of hot water, as shown by line b in Figure 7, for example, when the water volume is less than 5, it is caused only by the water volume change, and when the usage volume is 5, it is relatively gradual due to only the gas volume change. Its rising temperature is reduced. In other words, the normally used hot water of around 40°C can always be reliably obtained even if the water temperature changes from 5°C in winter to 30°C in summer.

In this way, according to the present invention, the temperature of hot water is adjusted by changing only the amount of water at all times, and the change is relatively gradual, making operation easier, and the gas burner 3 remains at full input during this time. This makes it possible to obtain highly efficient operation, and when the amount of water is at the appropriate amount for use, only the gas amount is changed, and the change in hot water temperature is relatively slow, but the change in water supply temperature due to seasonal changes is It has the effect of being able to maintain the hot water outlet temperature at a temperature suitable for normal use despite changes.

[Brief explanation of the drawing]

Fig. 1 is a cutaway front view of an example of a water heater equipped with the device of the present invention, Fig. 2 is an exploded perspective view of its main parts, and Fig. 3 shows an assembled state of the main parts of Fig. 1. Perspective view,
Figures 4 and 5 are side and front views for explaining the operation of the main parts of the device of the present invention, Figure 6 is a diagram showing an example of changes in gas amount, and Figure 7 is a diagram of changes in outlet temperature. It is a line diagram of an example. 1...Water boiler body, 2...Heat exchanger, 3...Gas burner, 4...Water passage, 5...Water amount adjustment member,
6...Gas passage, 7...Gas amount adjustment member, 8...
Operator, 9...Interlocking mechanism.

Claims (1)

[Scope of utility model registration request] The water heater body 1 includes a heat exchanger 2 and a gas burner 3 for heating the heat exchanger 2, and a water flow passage 4 connected to the heat exchanger 2 includes a water flow adjustment member 5, and a gas flow rate control member 5 connected to the gas burner 3. In a type in which a gas amount adjusting member 7 is interposed in the passage 6, the water amount adjusting member 5
This is controlled by an operator 8 that can be operated freely on the increasing side and decreasing side.
In a gas instantaneous water heater, an interlocking mechanism 9 is interposed between both members 5 and 7, which operates only in a region where the water volume has greatly increased, and operates only the gas volume adjusting member 7 to reduce the amount of water. Regulator.